Tours at 6 p.m. April 20, May 25 and June 15 at ABA Headquarters, 93 Clinton St., Delaware City.

The Delaware Department of Natural Resources and Environmental Control’s Division of Parks and Recreation and the American Birding Association are partnering this year to bring back Sunset River Cruises.

The scenic cruises provide the chance to discover the birds and other wildlife that inhabit Pea Patch Island, also home to Fort Delaware State Park, and the surrounding Delaware River.

A special feature of the cruises is the chance to see herons, egrets, ibises, bald eagles and osprey flying to and from one of the larger heron rookeries on the East Coast, located on Pea Patch Island’s northern tip.

The tours meet at 6 p.m. April 20, May 25 and June 15 at ABA Headquarters, 93 Clinton St., Delaware City. The tours end around sunset. In case of rain, the cruise will be held the next evening.

The tours cost $35 per person. Reservations must be made in advance at delawarestateparks.reserveamerica.com.

The ABA’s Heron Watch, another opportunity for birding, is held 6-8 p.m.,Thursdays from April 19 to June 28 at the association’s headquarters, where a knowledgeable birder will discuss differences in flying birds.

For more, call 838-3660.